Most babies are ready to drop from two naps to one between 13 and 18 months old. The key is watching for a cluster of specific sleep changes that last consistently for one to two weeks, not just a few rough days. A single bad nap week can be caused by teething, illness, or a developmental leap, so patience matters before making the switch.
Signs Your Baby Is Ready
No single sign confirms it’s time. You’re looking for a pattern of several of these behaviors showing up together, day after day, for at least one to two weeks straight:
- Nap refusal or protest. Your baby fights one or both naps, sometimes playing happily in the crib instead of sleeping. The morning nap may still happen, but the afternoon nap becomes a battle.
- Trouble falling asleep. Even when your baby does eventually nap, it takes much longer than usual to drift off.
- Short naps. One or both naps shrink to 30 or 40 minutes when they used to be longer.
- Bedtime gets pushed too late. Fitting two naps into the day means bedtime creeps past the point that works for your family.
- Night wakings or early mornings. Your baby starts waking during the night or popping up at 5 a.m. after months of sleeping through.
If you’re only seeing one of these signs, or it’s been less than a week, it’s likely a temporary disruption. The 12-month sleep regression, for example, mimics many of these signs but typically resolves on its own. Babies who truly need the transition will keep showing these patterns for two weeks or more, even when you’ve ruled out teething, sickness, and schedule changes.
Why Age Matters
Some babies show signs as early as 11 or 12 months, but most are not genuinely ready until at least 13 months. Switching too early is one of the most common mistakes parents make with this transition. A baby who drops to one nap before they can handle the longer stretches of awake time ends up overtired, which creates a frustrating cycle of worse sleep overall.
On the other end, some toddlers happily take two naps until 18 months or slightly beyond. There’s no deadline. If two naps are working and your child is sleeping well at night, there’s no reason to change the schedule just because other kids the same age have already switched. Toddlers between 12 and 24 months need 11 to 14 total hours of sleep per day (including naps), so the structure matters less than whether your child is hitting that range.
How to Make the Switch
The goal is a single nap roughly in the middle of the day, about five to six hours after your child wakes up in the morning. You get there gradually, not all at once. Start by pushing the morning nap later in 15 to 30 minute increments every day or two. As the morning nap shifts later, the afternoon nap naturally gets squeezed out because there isn’t enough time left in the day to fit it in.
Here’s what a gradual shift looks like for a child who wakes at 7:30 a.m.:
- Day 1: Nap at 11:30 a.m.
- Day 2: Nap at 11:45 a.m.
- Day 3: Nap at 12:00 p.m.
You keep pushing until the nap lands around 12:30 to 1:00 p.m., roughly five to five and a half hours after waking. Once you’re there, the nap typically lasts two to three hours, and bedtime falls about five to six hours after the nap ends. For many families, that means a nap from about 12:45 to 2:45 or 3:00 p.m. and bedtime around 7:30 to 8:00 p.m.
When the Transition Feels Rough
Expect some bumpy days. Your toddler’s body is adjusting to staying awake for longer stretches, and the first couple of weeks often involve a cranky late morning or an earlier-than-usual bedtime. That’s normal. The transition typically takes two to four weeks to fully settle.
The biggest thing to watch for is overtiredness. If you push the wake window too far, too fast, your toddler may only sleep 30 to 45 minutes for the single nap instead of the full two to three hours. Short naps during this transition are a signal that the morning stretch was too long. Back up by 15 minutes and try again. Overtiredness also shows up as bedtime battles, middle-of-the-night wakings, and those painful 5 a.m. wake-ups. If these problems are getting worse rather than better after a week or two of one nap, you may have transitioned too soon. It’s perfectly fine to go back to two naps for a few more weeks and try again later.
On particularly rough days, a short “bridge nap” of 15 to 20 minutes in the late afternoon can take the edge off without ruining bedtime. This isn’t a permanent second nap. It’s a pressure valve you use as needed while your child adjusts.
If Your Child Is in Daycare
Many daycare rooms switch to one nap around 12 months, which can be earlier than your child is ready. If this happens, you don’t have to match that schedule at home on weekends. Keep offering two naps on days you control until your child shows genuine readiness signs. Communicate with your daycare staff about what you’re seeing at home. Some centers can accommodate a second nap in a different room, or at least adjust the timing slightly. On daycare days when your toddler only gets one nap, an earlier bedtime (even 30 to 45 minutes earlier than usual) helps prevent an overtired spiral.